Hector Ambriz sent down, Chia-Jen Lo and Josh Zeid called up

The Astros have optioned RHP Hector Ambriz to Triple-A Oklahoma City and recalled RHP Chia-Jen Lo from Double-A Corpus Christi and RHP Josh Zeid from Triple-A Oklahoma City, the team announced.

Lo and Zeid will be making their debuts on an active MLB roster.

Lo, 27, owns a 3.24 ERA with six saves in 17 appearances combined between Corpus Christi, Single-A Quad Cities and Single-A Tri-City this season. He has 20 strikeouts in 16.2 innings, while allowing a .234 opponent’s batting average. He joined Corpus Christi on July 10. Lo was one of the final cuts this spring where he had a 2.08 ERA in nine appearances for the Astros.

Zeid, 26, has gone 4-1 with 13 saves and a 3.50 ERA in 43 relief appearances for Oklahoma City this season. He has served as the RedHawks closer since June 15 and is 13-for-15 in save opportunities in 2013. Zeid has posted 53 strikeouts in his 43.2 innings pitched, while allowing a .231 opponent’s batting average. Zeid also pitched well in spring training, making six appearances and posting a 1.50 ERA.

Ambriz, 29, has made 43 relief appearances for the Astros this season over two stints with the club. He most recently returned to Houston on July 19.

The moves fill out the Astros bullpen after the team traded closer Jose Veras to Detroit earlier in the day for a minor-league outfielder and a player to be named later.

<center><strong>Sept: 29: Yankees 5, Astros 1 (14 innings)</center></strong><br>
Jarred Cosart couldn't bear to watch as the worst season in Astros' history came to an excruciating end in extra innings. less

<center><strong>Sept: 29: Yankees 5, Astros 1 (14 innings)</center></strong><br>
Jarred Cosart couldn't bear to watch as the worst season in Astros' history came to an excruciating end in extra ... more

Photo: Karen Warren / Houston Chronicle

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<center><strong>Sept: 28: Yankees 2, Astros 1</center></strong><br>
Andy Pettitte went out in style by shutting down the Astros in a complete game for his last start as a MLB player.
<strong>Record:</strong> 51-110. less

<center><strong>Sept: 28: Yankees 2, Astros 1</center></strong><br>
Andy Pettitte went out in style by shutting down the Astros in a complete game for his last start as a MLB ... more

Photo: Karen Warren / Houston Chronicle

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<center><strong>Sept: 27: Yankees 3, Astros 2</center></strong><br>
The Astros 13th straight loss also gives them a new record in losses for a single season (109). The Yankees held on and closed out the Astros without even having to bring in Mariano Rivera.
<strong>Record:</strong> 51-109. less

<center><strong>Sept: 27: Yankees 3, Astros 2</center></strong><br>
The Astros 13th straight loss also gives them a new record in losses for a single season (109). The Yankees held on and closed out the ... more

Photo: Karen Warren / Houston Chronicle

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<center><strong>Sept. 25: Rangers 7, Astros 3</center></strong><br>
Brandon Laird's fifth home run of the year gave the Astros a 3-1 fourth-inning lead, but the Rangers attacked Dallas Keuchel in the bottom half of the inning to take the lead for good - sending the Astros to their 12th straight loss and franchise-worst 108th loss.
<strong>Record:</strong> 51-108. less

<center><strong>Sept. 25: Rangers 7, Astros 3</center></strong><br>
Brandon Laird's fifth home run of the year gave the Astros a 3-1 fourth-inning lead, but the Rangers attacked Dallas Keuchel in the bottom ... more

Photo: Paul Moseley / McClatchy-Tribune News Service

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<center><strong>Sept. 24: Rangers 3, Astros 2</center></strong><br>
Houston was not mystified like it has been by Rangers pitcher Yu Darvish, but the Astros couldn't secure their early lead.
<strong>Record:</strong> 51-107. less

<center><strong>Sept. 24: Rangers 3, Astros 2</center></strong><br>
Houston was not mystified like it has been by Rangers pitcher Yu Darvish, but the Astros couldn't secure their early ... more

<center><strong>Sept. 22: Indians 9, Astros 2</center></strong><br>
Erik Bedard was touched up for six runs on eight hits as the Indians overcome an early 2-0 deficit to rout the Astros and hand them their ninth straight loss.
<strong>Record:</strong> 51-105. less

<center><strong>Sept. 22: Indians 9, Astros 2</center></strong><br>
Erik Bedard was touched up for six runs on eight hits as the Indians overcome an early 2-0 deficit to rout the Astros and hand them their ... more

Photo: Jason Miller / Getty Images

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<center><strong>Sept. 21: Indians 4, Astros 1</center></strong><br>
Cleveland struck for three first-inning runs and the Astros were not able to get on the board until the ninth inning as the Indians extended the Astros' season-long eight-game losing streak.
<strong>Record:</strong> 51-104. less

<center><strong>Sept. 21: Indians 4, Astros 1</center></strong><br>
Cleveland struck for three first-inning runs and the Astros were not able to get on the board until the ninth inning as the Indians ... more

Photo: Mark Duncan / Associated Press

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<center><strong>Sept. 20: Indians 2, Astros 1 (7)</center></strong><br>
Three errors committed by the Astros contributed to this rain-shortened loss to Cleveland.
<strong>Record:</strong> 51-103. less

<center><strong>Sept. 20: Indians 2, Astros 1 (7)</center></strong><br>
Three errors committed by the Astros contributed to this rain-shortened loss to Cleveland.
<strong>Record:</strong> ... more

Photo: Jason Miller / Getty Images

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<center><b>Sept. 19: Indians 2, Astros 1 (11)</center></b>
The Astros lost their second extra-inning game in a row as Cleveland rallies past Houston in the 11th inning.
<strong>Record:</strong> 51-102. less

<center><b>Sept. 19: Indians 2, Astros 1 (11)</center></b>
The Astros lost their second extra-inning game in a row as Cleveland rallies past Houston in the 11th inning.
<strong>Record:</strong> ... more

<center><b>Sept. 15: Angles 2, Astros 1</center></b>
Houston inched closer to a 100-loss season and lost the series to Los Angeles.
<strong>Record:</strong> 51-98.

<center><b>Sept. 15: Angles 2, Astros 1</center></b>
Houston inched closer to a 100-loss season and lost the series to Los Angeles.
<strong>Record:</strong> 51-98.

Photo: Cody Duty / Houston Chronicle

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<center><b>Sept. 14: Angles 6, Astros 2</center></b>
The Astros found themselves down four runs after the fourth inning and weren't able to come back as the Angels took the second game of the series.
<strong>Record:</strong> 51-97. less

<center><b>Sept. 14: Angles 6, Astros 2</center></b>
The Astros found themselves down four runs after the fourth inning and weren't able to come back as the Angels took the second game of the ... more

Photo: Eric Christian Smith / Associated Press

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<center><b>Sept. 13: Astros 9, Angels 7</center></b>
Cody Clark, a 32-year-old, had his first major-league hit for Houston against Los Angeles.
<strong>Record:</strong> 51-96. less

<center><b>Sept. 13: Astros 9, Angels 7</center></b>
Cody Clark, a 32-year-old, had his first major-league hit for Houston against Los Angeles.
<strong>Record:</strong> ... more

Photo: Smiley N. Pool / Houston Chronicle

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<center><b>Sept. 11: Astros 6, Mariners 1</center></b>
The Astros got their 50th win of the season thanks to a solid starting pitching performance from Brad Peacock and an early cushion.
<strong>Record:</strong> 50-96. less

<center><b>Sept. 11: Astros 6, Mariners 1</center></b>
The Astros got their 50th win of the season thanks to a solid starting pitching performance from Brad Peacock and an early ... more

Photo: Otto Greule Jr / Getty Images

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<center><b>Sept. 10: Astros 13, Mariners 2</center></b>
The Astros tattooed Mariners pitchers to the tune of 13 runs in Seattle, taking the second straight game in the three-game set.
<strong>Record:</strong> 49-96. less

<center><b>Sept. 10: Astros 13, Mariners 2</center></b>
The Astros tattooed Mariners pitchers to the tune of 13 runs in Seattle, taking the second straight game in the three-game ... more

Photo: Ted S. Warren / Associated Press

Image 24 of 204

<center><b>Sept. 9: Astros 6, Mariners 4</center></b>
Jimmy Paredes came through in the ninth inning to tie the game and Jonathan Villar broke the tie in the next at bat with a two-run single giving the Astros the lead for good.
<strong>Record:</strong> 48-96. less

<center><b>Sept. 9: Astros 6, Mariners 4</center></b>
Jimmy Paredes came through in the ninth inning to tie the game and Jonathan Villar broke the tie in the next at bat with a two-run single giving the ... more

Photo: Otto Greule Jr / Getty Images

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<center><b>Sept. 8: A's 7, Astros 2</center></b>
Lucas Harrell got the surprise start, but the A's didn't care who was pitching as they roughed him up for seven runs in the third inning.
<strong>Record:</strong> 47-96. less

<center><b>Sept. 8: A's 7, Astros 2</center></b>
Lucas Harrell got the surprise start, but the A's didn't care who was pitching as they roughed him up for seven runs in the third ... more

Photo: Jason O. Watson / Getty Images

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<center><b>Sept. 7: A's 2, Astros 1</center></b>
Houston came up short in the third game of the series in Oakland.
<strong>Record:</strong> 47-95.

<center><b>Sept. 7: A's 2, Astros 1</center></b>
Houston came up short in the third game of the series in Oakland.
<strong>Record:</strong> 47-95.

Photo: Jeff Chiu / Associated Press

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<center><b>Sept. 6: A's 7, Astros 5</center></b>
The Astros couldn't hold onto an early lead in Oakland as the A's rallied to take the second game of the series.
<strong>Record:</strong> 47-94. less

<center><b>Sept. 6: A's 7, Astros 5</center></b>
The Astros couldn't hold onto an early lead in Oakland as the A's rallied to take the second game of the series.
<strong>Record:</strong> ... more

<center><b>Sept. 4: Astros 6, Twins 5</center></b>
Trevor Crowe follows through on his walk-off single in the ninth to help the club avoid a series sweep.
<strong>Record:</strong> 46-93. less

<center><b>Sept. 4: Astros 6, Twins 5</center></b>
Trevor Crowe follows through on his walk-off single in the ninth to help the club avoid a series sweep.
<strong>Record:</strong> ... more

Photo: Cody Duty / Chronicle

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<center><b>Sept. 3: Twins 9, Astros 6 (12)</center></b>
A three-run home run from Brandon Barnes in the ninth inning forced extras, but Minnesota eventually prevailed
<strong>Record:</strong> 45-93. less

<center><b>Sept. 3: Twins 9, Astros 6 (12)</center></b>
A three-run home run from Brandon Barnes in the ninth inning forced extras, but Minnesota eventually prevailed
<strong>Record:</strong> ... more